1.American research scientists are now working on creating replacements for living tissue.
work on 影響,對…起作用;繼續工作;從事于…;設法說服
The scientists are still working on inventing new methods of reaching outer space.
科學家們仍致力于發明到達外層空間的新方法 。
In order to make him accept our suggestion, I decided to work on him immediately.
為了讓他接受我們的建議,我決定立刻對他做工作 。